mirror of
https://github.com/jakcron/nstool
synced 2024-11-15 02:06:40 +00:00
[nstool] NCA processing more robust.
This commit is contained in:
jakcron
parent
60eda9e42e
commit
3437031128
1 changed files with 149 additions and 163 deletions
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@ -81,6 +81,146 @@ std::string kProgramPartitionNameStr[]
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"logo"
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};
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NcaProcess::NcaProcess() :
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mReader(nullptr),
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mKeyset(nullptr),
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mCliOutputType(OUTPUT_NORMAL),
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mVerify(false),
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mListFs(false)
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{
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for (size_t i = 0; i < nx::nca::kPartitionNum; i++)
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{
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mPartitionPath[i].doExtract = false;
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mPartitions[i].reader = nullptr;
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}
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}
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NcaProcess::~NcaProcess()
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{
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if (mReader != nullptr)
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{
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delete mReader;
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}
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for (size_t i = 0; i < nx::nca::kPartitionNum; i++)
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{
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if (mPartitions[i].reader != nullptr)
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{
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delete mPartitions[i].reader;
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}
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}
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}
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void NcaProcess::process()
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{
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fnd::MemoryBlob scratch;
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if (mReader == nullptr)
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{
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throw fnd::Exception(kModuleName, "No file reader set.");
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}
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// read header block
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mReader->read((byte_t*)&mHdrBlock, 0, sizeof(nx::sNcaHeaderBlock));
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// decrypt header block
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nx::NcaUtils::decryptNcaHeader((byte_t*)&mHdrBlock, (byte_t*)&mHdrBlock, mKeyset->nca.header_key);
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// generate header hash
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crypto::sha::Sha256((byte_t*)&mHdrBlock.header, sizeof(nx::sNcaHeader), mHdrHash.bytes);
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// proccess main header
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mHdr.importBinary((byte_t*)&mHdrBlock.header, sizeof(nx::sNcaHeader));
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// determine keys
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generateNcaBodyEncryptionKeys();
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// import/generate fs header data
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generatePartitionConfiguration();
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// validate signatures
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if (mVerify)
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validateNcaSignatures();
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// display header
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if (mCliOutputType >= OUTPUT_NORMAL)
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displayHeader();
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// process partition
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processPartitions();
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/*
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NCA is a file container
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A hashed and signed file container
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To verify a NCA: (R=regular step)
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1 - decrypt header (R)
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2 - verify signature[0]
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3 - validate hashes of fs_headers
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4 - determine how to read/decrypt the partitions (R)
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5 - validate the partitions depending on their hash method
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6 - if this NCA is a Program or Patch, open main.npdm from partition0
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7 - validate ACID
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8 - use public key in ACID to verify NCA signature[1]
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Things to consider
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* because of the manditory steps between verifcation steps
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the NCA should be ready to be pulled to pieces before any printing is done
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so the verification text can be presented without interuption
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*/
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}
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void NcaProcess::setInputFile(fnd::IFile* file, size_t offset, size_t size)
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{
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mReader = new OffsetAdjustedIFile(file, offset, size);
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}
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void NcaProcess::setKeyset(const sKeyset* keyset)
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{
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mKeyset = keyset;
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}
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void NcaProcess::setCliOutputMode(CliOutputType type)
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{
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mCliOutputType = type;
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}
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void NcaProcess::setVerifyMode(bool verify)
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{
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mVerify = verify;
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}
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void NcaProcess::setPartition0ExtractPath(const std::string& path)
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{
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mPartitionPath[0].path = path;
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mPartitionPath[0].doExtract = true;
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}
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void NcaProcess::setPartition1ExtractPath(const std::string& path)
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{
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mPartitionPath[1].path = path;
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mPartitionPath[1].doExtract = true;
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}
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void NcaProcess::setPartition2ExtractPath(const std::string& path)
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{
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mPartitionPath[2].path = path;
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mPartitionPath[2].doExtract = true;
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}
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void NcaProcess::setPartition3ExtractPath(const std::string& path)
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{
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mPartitionPath[3].path = path;
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mPartitionPath[3].doExtract = true;
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}
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void NcaProcess::setListFs(bool list_fs)
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{
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mListFs = list_fs;
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}
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void NcaProcess::generateNcaBodyEncryptionKeys()
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{
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// create zeros key
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@ -147,6 +287,7 @@ void NcaProcess::generateNcaBodyEncryptionKeys()
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printf("AES-CTR Key: ");
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fnd::SimpleTextOutput::hexDump(mBodyKeys.aes_ctr.var.key, sizeof(mBodyKeys.aes_ctr.var));
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}
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if (mBodyKeys.aes_xts.isSet)
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{
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printf("AES-XTS Key0: ");
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@ -198,7 +339,13 @@ void NcaProcess::generatePartitionConfiguration()
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info.format_type = (nx::nca::FormatType)fs_header.format_type;
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info.hash_type = (nx::nca::HashType)fs_header.hash_type;
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info.enc_type = (nx::nca::EncryptionType)fs_header.encryption_type;
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if (info.hash_type == nx::nca::HASH_HIERARCHICAL_SHA256)
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info.hash_tree_meta.importHierarchicalSha256Header(nx::HierarchicalSha256Header(fs_header.hash_superblock, nx::nca::kFsHeaderHashSuperblockLen));
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else if (info.hash_type == nx::nca::HASH_HIERARCHICAL_INTERGRITY)
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info.hash_tree_meta.importHierarchicalIntergityHeader(nx::HierarchicalIntegrityHeader(fs_header.hash_superblock, nx::nca::kFsHeaderHashSuperblockLen));
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// create reader
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try
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{
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// filter out unrecognised format types
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@ -240,16 +387,6 @@ void NcaProcess::generatePartitionConfiguration()
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// filter out unrecognised hash types, and hash based readers
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if (info.hash_type == nx::nca::HASH_HIERARCHICAL_SHA256 || info.hash_type == nx::nca::HASH_HIERARCHICAL_INTERGRITY)
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{
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switch(info.hash_type)
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{
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case (nx::nca::HASH_HIERARCHICAL_SHA256):
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info.hash_tree_meta.importHierarchicalSha256Header(nx::HierarchicalSha256Header(fs_header.hash_superblock, nx::nca::kFsHeaderHashSuperblockLen));
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break;
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case (nx::nca::HASH_HIERARCHICAL_INTERGRITY):
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info.hash_tree_meta.importHierarchicalIntergityHeader(nx::HierarchicalIntegrityHeader(fs_header.hash_superblock, nx::nca::kFsHeaderHashSuperblockLen));
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break;
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}
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fnd::IFile* tmp = info.reader;
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info.reader = nullptr;
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info.reader = new HashTreeWrappedIFile(tmp, true, info.hash_tree_meta);
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@ -263,24 +400,12 @@ void NcaProcess::generatePartitionConfiguration()
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}
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catch (const fnd::Exception& e)
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{
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printf("ugh\n");
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info.fail_reason = std::string(e.error());
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if (info.reader != nullptr)
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delete info.reader;
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info.reader = nullptr;
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info.hash_tree_meta = HashTreeMeta();
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}
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/*
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if (info.reader != nullptr)
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{
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fnd::MemoryBlob sss;
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sss.alloc(0x100);
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info.reader->read(sss.getBytes(), 0x100);
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printf("[%d] START\n", i);
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fnd::SimpleTextOutput::hxdStyleDump(sss.getBytes(), 0x100);
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printf("[%d] END\n", i);
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}
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*/
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}
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}
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@ -520,142 +645,3 @@ void NcaProcess::processPartitions()
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}
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}
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}
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NcaProcess::NcaProcess() :
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mReader(nullptr),
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mKeyset(nullptr),
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mCliOutputType(OUTPUT_NORMAL),
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mVerify(false),
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mListFs(false)
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{
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for (size_t i = 0; i < nx::nca::kPartitionNum; i++)
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{
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mPartitionPath[i].doExtract = false;
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mPartitions[i].reader = nullptr;
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}
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}
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NcaProcess::~NcaProcess()
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{
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if (mReader != nullptr)
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{
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delete mReader;
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}
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for (size_t i = 0; i < nx::nca::kPartitionNum; i++)
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{
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if (mPartitions[i].reader != nullptr)
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{
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delete mPartitions[i].reader;
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}
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}
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}
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void NcaProcess::process()
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{
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fnd::MemoryBlob scratch;
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if (mReader == nullptr)
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{
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throw fnd::Exception(kModuleName, "No file reader set.");
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}
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// read header block
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mReader->read((byte_t*)&mHdrBlock, 0, sizeof(nx::sNcaHeaderBlock));
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// decrypt header block
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nx::NcaUtils::decryptNcaHeader((byte_t*)&mHdrBlock, (byte_t*)&mHdrBlock, mKeyset->nca.header_key);
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// generate header hash
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crypto::sha::Sha256((byte_t*)&mHdrBlock.header, sizeof(nx::sNcaHeader), mHdrHash.bytes);
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// proccess main header
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mHdr.importBinary((byte_t*)&mHdrBlock.header, sizeof(nx::sNcaHeader));
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// determine keys
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generateNcaBodyEncryptionKeys();
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// import/generate fs header data
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generatePartitionConfiguration();
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// validate signatures
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if (mVerify)
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validateNcaSignatures();
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// display header
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if (mCliOutputType >= OUTPUT_NORMAL)
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displayHeader();
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// process partition
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processPartitions();
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/*
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NCA is a file container
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A hashed and signed file container
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To verify a NCA: (R=regular step)
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1 - decrypt header (R)
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2 - verify signature[0]
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3 - validate hashes of fs_headers
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4 - determine how to read/decrypt the partitions (R)
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5 - validate the partitions depending on their hash method
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6 - if this NCA is a Program or Patch, open main.npdm from partition0
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7 - validate ACID
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8 - use public key in ACID to verify NCA signature[1]
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Things to consider
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* because of the manditory steps between verifcation steps
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the NCA should be ready to be pulled to pieces before any printing is done
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so the verification text can be presented without interuption
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*/
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}
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void NcaProcess::setInputFile(fnd::IFile* file, size_t offset, size_t size)
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{
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mReader = new OffsetAdjustedIFile(file, offset, size);
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}
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void NcaProcess::setKeyset(const sKeyset* keyset)
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{
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mKeyset = keyset;
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}
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void NcaProcess::setCliOutputMode(CliOutputType type)
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{
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mCliOutputType = type;
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}
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void NcaProcess::setVerifyMode(bool verify)
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{
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mVerify = verify;
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}
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void NcaProcess::setPartition0ExtractPath(const std::string& path)
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{
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mPartitionPath[0].path = path;
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mPartitionPath[0].doExtract = true;
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}
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void NcaProcess::setPartition1ExtractPath(const std::string& path)
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{
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mPartitionPath[1].path = path;
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mPartitionPath[1].doExtract = true;
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}
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void NcaProcess::setPartition2ExtractPath(const std::string& path)
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{
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mPartitionPath[2].path = path;
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mPartitionPath[2].doExtract = true;
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}
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void NcaProcess::setPartition3ExtractPath(const std::string& path)
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{
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mPartitionPath[3].path = path;
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mPartitionPath[3].doExtract = true;
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}
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void NcaProcess::setListFs(bool list_fs)
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{
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mListFs = list_fs;
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}
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